Definitive Technology Mythos 3C-85 Ultra-Slim On-Wall Passive Sound Bar Review — If you’re after an audiophile-grade, ultra-slim sound bar that seamlessly integrates with an 85″ TV, look no further than Definitive Technology’s Mythos 3C-85. This passive, on-wall design boasts a 13-speaker array housed in a less-than-2″ deep, IP66-rated cabinet, delivering spacious, realistic sound that redefines your home theatre experience.
Design & Build Quality
The Mythos 3C-85 marries form and function in a rigid, aircraft-grade aluminium enclosure. At just 1.87″ deep, its sleeker-than-slim profile hugs the wall, while symmetrically adjustable extensions (up to 6.25″ each side) ensure a perfect alignment with 85″ and larger-class TVs. Its micro-perforated, powder-coated steel grille protects the drivers, and an IP66 weather-resistant rating makes it equally at home indoors or in a covered alfresco theatre.
Key Features & Technology
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13-Speaker Array: Each channel occupies its own acoustic chamber for pristine separation and minimal cabinet resonance.
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XTDD Aluminium Dome Drivers: Ultra-stiff 3.5″ woofers and midranges eliminate breakup, broaden dispersion and generate a natural, enveloping soundstage.
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Aluminium Oxide Dome Tweeters: Dymension™ Series tweeters offer smooth extended response, razor-sharp transients and precise imaging.
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Precision Crossovers: Meticulously tuned networks deliver balanced, dynamic performance across 100 Hz–25 kHz.
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Adjustable Width: From 72.8″ to 79.5″ to perfectly match your display’s dimensions.
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Timbre-Matching: Uniform voicing with Definitive Technology speakers for seamless multi-channel expansion.
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Nominal Impedance: 4 Ω (8 Ω compatible) with 88 dB sensitivity (2.83 V/1 m) — recommended amplification: 25–150 W per channel.
Performance & Sound Quality
From whispered dialogue to explosive sound effects, the Mythos 3C-85 excels in clarity and impact. The dual midrange drivers articulate voices and instruments with lifelike warmth, while the aluminium oxide dome tweeters extend airy highs without harshness. The broad horizontal dispersion ensures every seat in the room enjoys a coherent, three-dimensional soundstage. Add a dedicated subwoofer, such as Definitive Technology’s Descend series, and experience cinema-worthy bass that doesn’t compromise the bar’s low-profile aesthetics.
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Who Should Consider the Mythos 3C-85?
This sound bar is tailor-made for enthusiasts who demand premium Definitive Technology acoustics without sacrificing décor. If you own (or plan to install) an 85″ or larger TV in a dedicated home theatre, media room or covered outdoor space, the Mythos 3C-85 brings studio-grade fidelity in a minimalist package. Custom installers and integrators will appreciate the VESA-compatible, hassle-free mounting system and weather-proof design.
Pros & Cons
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Pros:
- Audiophile-grade clarity with aluminium dome and XTDD drivers
- Ultra-slim, adjustable-width cabinet for 85″+ TVs
- IP66 weather rating—ideal for covered alfresco setups
- Precision crossovers and timbre-matching ensure seamless multi-speaker integration
- Rigid aluminium enclosure minimises resonances
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Cons:
- Requires separate amplifier and cabling (passive design)
- Premium price point—designed for serious home theatre enthusiasts
- Optimal bass extension needs a dedicated subwoofer for full low-end impact
Elevate Your Home Theatre Experience
If you’re ready to transform your living space with breathtaking dynamics and pinpoint imaging, the Definitive Technology Mythos 3C-85 Ultra-Slim On-Wall Passive Sound Bar is the perfect choice. Speak with our expert team at The Audio Tailor on 1300 308 711 or email us at sales@theaudiotailor.com.au to discuss custom integration options. Explore the full specifications and order yours today on our Definitive Technology Mythos 3C-85 Product Page.
